Re: [linux-audio-user] IRQ conflicts, acpi, and linux audio

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To: A list for linux audio users <linux-audio-user@...>
Date: Sunday, November 27, 2005 - 6:45 pm

On 27/11/05, Mark Knecht wrote:

> > Didn't Clemens Ladisch write a (now outdated) patch to re-assign

> For APIC - yes

Oh, perhaps I misread at

http://users.informaik.uni-halle.de/~ladischc/pic_priorities.html

where he says:

(quote on)

To configure the PIC, use the following little program:
set8259priorities.c (source code only).

[...]

The above example configuration with interrupt 5 at the
top can be set with "set8259priorities 5 8". For interrupt 11
at the top, run "set8259priorities 2 11".

(quote off)

Or perhaps I didn't understand what he was saying. It seems
to be saying that the PIC controller can be programmed to
some extent from software, at least in principle (perhaps it
needs some hardware support?)

> > Is the latter an intrinsically inferior solution?

> I didn't follow. Sorry.

I meant to ask: is using the irq handling thread priority control
from the rt kernel patches necessarily a worse way to go about
things than hardware re-prioritisation?

Cheers,

- Pete.

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Messages in current thread:
Re: [linux-audio-user] IRQ conflicts, acpi, and linux audio, Pete Leigh, (Sun Nov 27, 6:45 pm)
Re: [linux-audio-user] IRQ conflicts, acpi, and linux audio, Florian Schmidt, (Sun Nov 27, 9:33 pm)
Re: [linux-audio-user] IRQ conflicts, acpi, and linux audio, Florian Schmidt, (Sun Nov 20, 1:44 am)
Re: [linux-audio-user] IRQ conflicts, acpi, and linux audio, Christoph Eckert, (Sun Nov 20, 12:24 am)
Re: [linux-audio-user] IRQ conflicts, acpi, and linux audio, Christoph Eckert, (Sun Nov 20, 11:15 am)
Re: [linux-audio-user] IRQ conflicts, acpi, and linux audio, Christoph Eckert, (Sun Nov 20, 9:21 pm)
Re: [linux-audio-user] IRQ conflicts, acpi, and linux audio, Christoph Eckert, (Sun Nov 20, 9:13 am)
Re: [linux-audio-user] IRQ conflicts, acpi, and linux audio, Christoph Eckert, (Sun Nov 20, 9:17 pm)
Re: [linux-audio-user] IRQ conflicts, acpi, and linux audio, Christoph Eckert, (Sun Nov 20, 9:26 pm)
Re: [linux-audio-user] IRQ conflicts, acpi, and linux audio, Ross Vandegrift, (Mon Nov 21, 12:05 am)
Re: [linux-audio-user] IRQ conflicts, acpi, and linux audio, Cesare Marilungo, (Sun Nov 20, 1:55 am)